PHOTOS

Olympic Track Stars to Watch

Usain Bolt | Jamaica

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While he faces his stiffest competition in the 100-meters -- from Gay and Asafa Powell, who has come up short in previous races -- 200-meter specialist Usain Bolt has the chance to strike gold, twice. Running alongside Gay and Powell in the 100, Bolt, the 200-meter Jamaican record holder at 19.75 seconds, is the favorite.
Photo: Bill Frakes/SI
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